1406063421 has 64 divisors (see below), whose sum is σ = 2574581760. Its totient is φ = 740033280.

The previous prime is 1406063419. The next prime is 1406063453. The reversal of 1406063421 is 1243606041.

1406063421 is a `hidden beast` number, since 1 + 4 + 0 + 6 + 0 + 634 + 21 = 666.

It is not a de Polignac number, because 1406063421 - 2¹ = 1406063419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1406063401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 146356 + ... + 155666.

It is an arithmetic number, because the mean of its divisors is an integer number (40227840).

Almost surely, 2^1406063421 is an apocalyptic number.

It is an amenable number.

1406063421 is a deficient number, since it is larger than the sum of its proper divisors (1168518339).

1406063421 is a wasteful number, since it uses less digits than its factorization.

1406063421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9391 (or 9385 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 1406063421 is about 37497.5121974778. The cubic root of 1406063421 is about 1120.3016356468.

Adding to 1406063421 its reverse (1243606041), we get a palindrome (2649669462).

The spelling of 1406063421 in words is "one billion, four hundred six million, sixty-three thousand, four hundred twenty-one".